Door check and closer.



J. HOFERLE.

DOOR CHECK AND CLOSER.

APPLICATION men MAR. 14. 1911.

1 ,47,27% Patented Nov. 20. 191?.

JZQ/ 2 sugarssum 1.

J. HOFER LE. DOOR CHECK A'ND CLOSER.

APPLICATION FILED MAR. 14. 1947. Y

Patented Nov. 20, 1917.

2 SHEETSSHF.ET 2.

rats s ra ns nearer ion.

JOHN I-IOFERLE, OF CHICAGO, ILLINOIS, ASSIGNOR 0F ONE-FOURTH T0 LOUIS.A'UEB, ONE-FOURTH T0 ALBERT AUER, AND ONE-FOURTH [PO-ANDREW AUER, AL];OI?

CHICAGO, ILLINOIS.

DOOR CHECK AND CLOSER.

Application filed March 14, 1917. Serial No. 154,781.

To all 'whom it may concern:

I3e it known that I, Joint Hermann, a citizen of the United States, anda resident of the city of Chicago, county of Cook, and

State of Illinois, have invented certain new and useful Improvements inDoor Checks and Closers, of which the following is a specification. y ph My lllVQIltlOniIQlfltQS to automatlc door ClOSIIIg aHCl ClIECkIHgdevices that are adapted to be carried partly by the door and partly bythe casingsurrounding the same in a manner similar to that disclosed inLet ters Patent of the United States issued to me under date of March30, 1915, No. 1,133,725, for an improved door check and closer. In adevice of this Character the door is closed by means of a Suitablecontraction spring inclosed within the cylinder andhollow piston rod andis checked or re tar'ded in itsmovement through the medium vision of anovel piston head that is 'constructed in a manner so that the air maypass easily through the piston head and the piston from one side to theother as the,

door is opened, but will be compressed in front of the piston headas thedoor is closed and will thereby check or retard the closing of the same.v y

A further object of my present invention is the provision in a doorclosing and checking device ofsuitable novel means for retaining theflexible "ring or washer of the piston head in close contact with theinterior ofpthe cylinder and preventleakage of air around the same. 7

Other objectsof my'invention comprise the provision of a door closingand check ing device that is comparatively simple in construction,economical to and dependable in its operationfl I prefer to accomplishthe divers objects of my invention by substantially the means and insubstantially the manner hereinafter fully'set forth and described,reference bemanufacture,

ing had to the accompanying formlng where1n,-

drawings a part of this specification,

Figure 1 is a top plan of my closing and checking device attached to adoor and casing, the door. being partly opened forthe purpose ofillustrating the relative positions of the elements of my device.

fig. 2 is a longitudinal front elevation thereof.

Fig. 3 is a central longitudinal section taken through the cylinder,piston rod, and piston head.

Fig. dis a fragmental section showing the parts of the piston head inthe relation assumed during a compression stroke.

Fig. 5 is a transverse section on line 5-5 of Fig. 4, particularlyshowing an arrangement of the spring for expanding the cupwasher. p h

"Fig. 6 is a perspective view showing a modified structure for expandingthe cupwasher.

In the drawings similar reference char acters have been employed todesignate the same parts throughout the divers figures thereof.

Referring more particularly to Figs. 1, 2

and '3 of the drawings, it will be observed the devicepreferablycomprises an elongated cylinder or tubular member 10, wherein a.

suitable hollow piston rod 11 is adapted to reciprocate while a coiledcontraction spring 12 is inclosedin" said piston rod, one end of saidspring being adapted to extend out through the inner end of hollowpiston rod 11 and is connectedto the closure cap 13 Specification ofLetters Patent. Patgnt fl N 2% 1191*? i screwed or otherwise securedtothe adjacent end of the cylinder 10. The opposite end of said springis connected by an elongated bolt 14 to the opposite or outer end of thepiston rod 11, said bolt being provided with a fiat sided or squaredshank 15 that fits into a correspondingly shaped opening 16 in a washer17 disposed in the end of the piston rod. In order that the head of thebolt may be conveniently seated in the washer, the

latter is preferably constructed in a concave manner, 'asshown, so thatwhen the cap 18 of said piston rod 1s screwed onto the end bol thistappedor screwed into around or cylindrical nut19 that is frictionallyheld thereof,nit will press against said washer and thereby prevent therotation of the bolt 14. p The elongated threaded portion of the in theadjacentend'" ofthe coiled-spring 12, and it Will be observed that byreleasing'the CYlilIClQRlOfflDd rotating ThllQFISHDIB inithe: on'ei rod,the nut 19 Will be screwed up or down on the bolt 14, thereby extending-oweon-" tracting the spring 12, and cause the same tolexer'tgreaterkorulesssitension ini closing thedoor.

The cap 13 is provided Witha suitableem bossme11t.20,. that. providesmeans whereby thei:TadjiiQentYend1 of the cylinder may; be, pivot'alllv"and reinovabl'y' mounte d nponlhe.-. hinge of.;a,suitable toggle, one.of the m'e'im heirs iv11ereofe0n1prisesa horizontally" dis-; posed,L'substantially; L-jshapediarni 1 21. "that; hasthel u per end of. itslateral portion 22;. screw-threaded 'to-..fo"r1n'. a pintle that. re-.ceives,the.1ug. o1f embossnien't. .20 of caprlizf 20,.1115 opposite endof arm 21is hingedlycom.

' nected to amountingplateQB securedrinany su i't ablefmanner.to1theupperrportion of the. door and which" is so positioned that said! armAvill, 1111121611, .normal conditions, be dis .posedtin. a plane at.substantially; .az..right-. angle to .the'plaiie of the door; Whenclosed; The companion membemftthe toggle con-- sists. oflaneXtensibleZor adj iistable. link, one. element [24: .1of1 fi'vhichispivotally securedito 80Ma bracket 25inount'e'd on'th e door frameand;

' comprises. a. turn-buckle .thatis. adapted .to

cooperateiwith'the elongated threadedqshank... of the other element 26of said link; [The l. outer :end of. the. link .is.preferably bent .or

.defie'oted laterally andiislada'pted to..be..ad.-.

' jii'stabl if and.ipivotallynnountedwinna bifu'rr.

cated lateral boss 27, formed on one sideloffl. the shorten..verticaltportion. 22,- of.l.the L shapedlarm 21.1. This .Qdisposition 10f fiche.

4th toggle and. its connected .eleinents .rvill pen.

initth'eLdoor tobeopened. andfclosed intthe customary manner or. to beswung {back until .1 theip ill of. ith'elspriiig is .on... an;approximate dad-izenterg when the: energy of the same,

45.i.WilLiiot..be..feltland theadoor will remain openedipositiomg I havedisclosed "hereina .novel. construe-,

tion. of: {the .piston, carried .upon .the :inner end 'ofi'the hollowpiston .rod 11. which is.. 50,; illiistrated-lin detail in. Figs. 3,14and. .5; of.

thelvdiia vings wherein. :it .Will 'be'z observed, amhnnulgir shoulder 128. is; provided Qupoirtheiinner end of the :pis'tonrod.v Aflared .1sleeve 2910i? substantially; the sameldi'a'meter 55, as the zpistonsrod'is screwed into .the -th'rea-d.-.

ecL bore" of .said. shoulder- 0r..:piston rod in. theiifornieixiristancezuntil, it abuts! the endf. ofllthepiston:rod..as.;sl10\vn:in..Figs. .3 "and 3 4 endfthisil flared lsleeve Iextends; .through. a

6O central aperture in. the .Valve or piston .head-....

tQLbhefrea-LEter described. Thefiared sleeve. 1

29:11:18 lateral,.portsfidprovidecl thereinand.

a backingjvasherlor gasket 31,.is .interposedJ betilveenthe shoulder 28,andvthe base 0f :the. I:

([6 e a-Ive:or piston head iVhen the .pis tonh'ead Q.

or" mites entering theylihder-iOi the base thereof-Will be forcedagainstthe Washer 31 which; iniiiitsizturn :wrll beeforoedaagainstitheCllIEBCiLiDREOlFtlIQZ .otherirrelativeit :the;pistonriijanrnilarshoulder; 2S;.theneby prevenfingpthe escape of air fromonessideiofithenvalvenor pist'on heaebto the other; but when thepistorr'is being Withdrawn in the cylinder 10, th'e' -ipistoi i head orvalve Will HIOKQEEOSHVQRQL to. the flared endportion of the sleeve 29,thereby uncovering'the ports 30 and permitting a free passage.ofthe airthronghihe-e. piston -head or..va1ve, .\vhich" QLflatlj failitates ithewthdran 10f the; piston. andihe oPI' iliQQf th' ddorg'f I Q The'pistfoni'he id waiverprefer bi i om 80, prises a base(plate32311central. hd t0; provideIaI-i .aii lularfizfngel33thet 5}rounds: the flar'e'dbleeve 292 "A"cup-'W21S1 I. Evil-0ft leather or...other. suitable materiahiijs inioimt' edjupen the Lbasemlateaboiitiftlie e; andis"seca dstherete yfe ring 35 6M Whichthe edge f the.fiahgefiiii'sf i1p-.set..j. n,. ordretOikQpjh; sides. of; fliecupgyvajslier; in I, yielding, and fcoiiperative relatio ithFI-theWalls"of .the Cylinder 10,1 1 have, providedthe'f .9 0 l sprifig riiig6;.1W iicliiis.heldlirisid fi e cupsivasher. by tongues 37;? extendingfrond the fia'nge' of ;ba;seplate32 iiiisidelthe cup-4 washeri andoutsid'eilandflover tthe" springring; as shown- (Asa modifidjfi ansFfQi'. :pressi11g,95. the cu-p.- washer. -.i1ito contact .i'Witli' the"fcy'liui deli 10, 'If.have a videjda fiat-[ring .38 jslleoin indetailin" logy Tofftheudr'awings; which? hasha series, ofjis'pringjongnes .39.; e endr' ing. laterally: from ,tlieg outerledge thereofi109. which'iare adapted -.to.;pressf againstgilie in, terior fiurfcbfigpf thegcup w,asher;' The. as: sembly; of, the ,hadidf. 170111 14withl'concave wash,er,, 1'Z;-wh-ile being su,ffi ientlyj close .to',prevent a rotation, is not, -h'oivever,},s'oitight1111iv as topreyenttheeasy passagejofiairilpast thesamegrj 1'.}..'.A;1o@r..chek;.andgcloser,.mmpnisinga cylinder, a .hollhw- 'piston od@reciprocable;.JLQ thereimland.Iprovidedmvithlateral,;ports,fa a springwithiii said .cylinderj andfpiston-rodjfi. onel'e'ncl. whereofi Yis'vconnected .Zto. the {adj acent end ofsaid'cylindefla piston-headinov-jably inountedupon theinner end oisaidfpis 15. tonirodcandfadaptedfto:contiqol. the Ipassage l; of 'airjthfoughlsaid'ports,.-.and a boltIcarriedf}. by. said, nistonrod 1to..-. W'hichj theadjacent .I; end iofifgaid ispringrisi ,adjnstably; ;.connected;;,i

2Q AfidopricheCkLaHdJCIQ Qr .comprisinga Q11 9 cylirldei', a holloivpiston rodjreciproeableii therein a spring within saidjfcyl inde'rf andpistona'rod ...one end; Iwh'e'reof. isfl connectedj toe the:'adjfacent..- end.10f .fsaid cylinder, a....b'olt;; carried :by saidpiston-rock, ,an element. 136151125 i. justable' iipon said .boltito.which. tl1e'.adja f cent end ofsaid spring is. connected wherer byth'e'rotation :ofjsaid Cylinder. isladaptedztoiw regulate;theetensionpfsaidkispring i T 1 a new cheekirig and c s iiggilefic.

comprising a cylinder and a hollow pistonrod, and means for retractingsaid rod within said cylinder, a piston-head movably mounted upon saidrod, and valve mecha nism controlled by the movement of said piston-headand cooperating With said hollovv piston-rod whereby the fluid in saidcylinder is adapted to pass from one side to the other of saidpiston-head through said piston-rod.

4. In a door checking and closing device comprising a cylinder andpist0n-rod, and means for retractingsaid rod Within said cylinder, apiston-head carried by the inner Copies of this patent may be obtainedfor five cents each, by addressing the end of said rod, a cup-Washermounted upon said piston-head, a spring mounted within said cup-Washerand adapted to press the Walls thereof into contact with said cylinderand a device carried by a portion of said Washer and adapted to retainsaid spring in position against said washer.

Signed at Chicago, county of Cook, and State of Illinois, this 10th dayof March,

JOHN HOFERLE.

Witnesses.

E. K. LUNDY, J r., H. SLACK.

Commissioner of Patents,

Washington, D. 0.

